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Finding the Fourth Proportional to 128,044.70, 192,061.38 and 43,812.26

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Solution

The fourth proportional to 128,044.70, 192,061.38 and 43,812.26 is: 65,716.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,044.70 : 192,061.38 = 43,812.26 : x
  2. Step 2: Convert to fraction form
    128,044.70/192,061.38 = 43,812.26/x
  3. Step 3: Cross multiply
    128,044.70x = 192,061.38 × 43,812.26
  4. Step 4: Simplify right side
    128,044.70x = 8,414,643,116.52
  5. Step 5: Solve for x
    x = 8,414,643,116.52/128,044.70
  6. Step 6: Final answer
    x = 65,716.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.